Canadian Music Trades Journal, February 1917, p. 64: "The Mozart Piano Co., Ltd., was incorporated in 1909 with a capitalization of $10,000 and in 1912 built the factory now occupied at 94 to 110 Munro Street (Toronto). The factory output, from the commencement, has been largely taken by Heintzman & Co. The firm is also making a line of talking machines."

Canadian Music Trades Journal, February 1917, p. 64: "The National Piano Co. will take the output of the Mozart Piano Co., Ltd in which concern a substantial interest has been taken."

Canadian Music Trades Journal, September 1917, p. 63: "The line of National phonographs is manufactured by the Mozart Piano Co., Ltd, which is controlled by the National Piano Co., Ltd., [266-268 Yonge Street, Toronto]."

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Talking Machine World, March 1917, p.6. Toronto Trade. The talking machines were manufactured by the Mozart Piano Company which was controlled by the National Piano Company.



Toronto Daily Star, November 18, 1920 - National "The Most Delightful Phonograph in the World".